| Oisín vs Kazuya | 42–25 | 62.69% |
| Oisín vs Bryan | 36–25 | 59.02% |
| Oisín vs King | 37–23 | 61.67% |
| Oisín vs Reina | 31–24 | 56.36% |
| Oisín vs Jin | 38–16 | 70.37% |
| Oisín vs Dragunov | 38–12 | 76.00% |
| Oisín vs Armor King | 26–14 | 65.00% |
| Oisín vs Hwoarang | 17–21 | 44.74% |
| Oisín vs Devil Jin | 17–18 | 48.57% |
| Oisín vs Paul | 22–10 | 68.75% |
| Oisín vs Jun | 24–8 | 75.00% |
| Oisín vs Lee | 19–12 | 61.29% |
| Oisín vs Lili | 17–12 | 58.62% |
| Oisín vs Lars | 15–11 | 57.69% |
| Oisín vs Yoshimitsu | 12–12 | 50.00% |
| Oisín vs Steve | 18–6 | 75.00% |
| Oisín vs Alisa | 17–7 | 70.83% |
| Oisín vs Heihachi | 14–10 | 58.33% |
| Oisín vs Law | 15–8 | 65.22% |
| Oisín vs Azucena | 12–8 | 60.00% |
| Oisín vs Nina | 10–9 | 52.63% |
| Oisín vs Shaheen | 7–6 | 53.85% |
| Oisín vs Jack-8 | 8–4 | 66.67% |
| Oisín vs Kuma | 9–3 | 75.00% |
| Oisín vs Xiaoyu | 8–2 | 80.00% |
| Oisín vs Asuka | 6–4 | 60.00% |
| Oisín vs Claudio | 6–4 | 60.00% |
| Oisín vs Feng | 7–2 | 77.78% |
| Oisín vs Leo | 3–5 | 37.50% |
| Oisín vs Leroy | 4–4 | 50.00% |
| Oisín vs Eddy | 0–8 | 0.00% |
| Oisín vs Fahkumram | 5–3 | 62.50% |
| Oisín vs Zafina | 5–1 | 83.33% |
| Oisín vs Victor | 3–3 | 50.00% |
| Oisín vs Raven | 1–4 | 20.00% |
| Oisín vs Anna | 1–4 | 20.00% |
| Oisín vs Lidia | 2–2 | 50.00% |
| Oisín vs Miary Zo | 1–3 | 25.00% |
| Oisín vs Panda | 3–0 | 100.00% |
| Oisín vs Clive | 1–2 | 33.33% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.